它显示我的一个变量没有定义，当我看到它是

Question

这是出现的错误：

What type of device is it?phone
What make of phone is it? [Iphone, Samsung or other]samsung
Traceback (most recent call last):
  File "C:\Users\Chris\Documents\Chris\School\School\computing\task 3 testing.py", line 79, in <module>
    if ('4') in model_iphone:
NameError: name 'model_iphone' is not defined

我不知道如何解决它。 如果有人能指出我的代码的一些潜在问题，那将会很有帮助。 我知道它不是最有效的代码，但如果能得到一些帮助，那就太好了，谢谢。

我的代码：

apple_question = []


for row in apple_file:
    apple_question.append(row)


other = open("task 3 other questions.csv")
other_file = csv.reader(other)

other_question = []

for row in other_file:
    other_question.append(row)

pre_questions = open("task 3 pre questions.csv")
pre_questions_file = csv.reader(pre_questions)

pre_questions_question = []

for row in pre_questions_file:
    pre_questions_question.append(row)

device_type = input(pre_questions_question[1][0])
device_type.lower()

if ('phone') in device_type:
    make = input(pre_questions_question[2][0])
    make.lower()

elif ('iphone')in make:
    model_iphone = input(samsung_question[1][0])
    model_iphone.lower()

elif ('samsung') in make:
    model_samsung = input(samsung_question[1][0])
    model_samsung.lower()

elif ('other') in make:
    make_other = input(other_question[0][0])
    make_other.lower()

    model_other = input(other_question[1][0])
    model_other.lower()

    problem_other = input(other_question[2][0])
    problem_other.lower

    info = print(other_question[3][0])

#other 
    text_file = open('Otherdevice.txt', 'w' )

    text_file.write(make_other)

    text_file.write(model_other)

    text_file.write(problem_other)

    text_file.close()

#apple

if ('4') in model_iphone:
    ios = input(apple_question[3][0])

elif ('5') in model_iphone:
    ios = input(apple_question[3][0])

elif ('5c') in model_iphone:
    ios = input(apple_question[3][0])


if ('7') in ios:
    memory = input(apple_question[4][0])

elif ('8') in ios:
    memory = input(apple_question[4][0])

elif ('9') in ios:
    memory = input(apple_question[4][0])

else:
    print("Sorry but you have entered invalid or not surported information please try again")


if ('8gb') in memory:
    query = input(apple_question[5][0])

elif ('16gb') in memory:
    query = input(apple_question[5][0])

elif ('32gb') in memory:
    query = input(apple_question[5][0])

#samsung

if ('s4') in model_samsung:
    android = input(samsung_question[2][0])

elif ('s5') in model_samsung:
    android = input(samsung_question[2][0])

elif ('s6') in model_samsung:
    android = input(samsung_question[2][0])



else:
    print("Sorry but you have entered invalid or not surported information please try again")


if ('jellybean') in android:
    service_provider = input(samsung_question[3][0])

elif ('lollipop') in android:
    service_provider= input(samsung_question[3][0])

elif ('marshmallow') in android:
     service_provider = input(samsung_question[3][0])

Answer 1

跟踪代码中发生的事情有点困难，但从我所见，看起来您从未创建变量model_iphone 。 相反，由于您输入的是“samsung”，因此代码正在创建一个名为model_samsung的变量，它执行相同的操作。 不要让所有这些不同的变量做同样的事情（并且只初始化其中一个），而是尝试只制作一个统一变量：

#Previous code...

#check for device type
if ('phone') in device_type:
    make = input(pre_questions_question[2][0])
    make.lower()

#separate if statement block to process the make and model after determining the type
if ('iphone')in make: #I CHANGED THIS LINE AS WELL TO WHAT YOU INTENDED IT TO DO (I think)
    model = input(samsung_question[1][0])
    model.lower()

elif ('samsung') in make:
    model = input(samsung_question[1][0])
    model.lower()

elif ('other') in make:
    make_other = input(other_question[0][0])
    make_other.lower()

    model = input(other_question[1][0])
    model.lower()

    problem_other = input(other_question[2][0])
    problem_other.lower

    info = print(other_question[3][0])

#other 
    text_file = open('Otherdevice.txt', 'w' )

    text_file.write(make_other)

    text_file.write(model)

    text_file.write(problem_other)

    text_file.close()

#apple

#ask the corresponding questions
if ('4') in model: 
    ios = input(apple_question[3][0])

#Continue code...

注意如何全部投入到现在同样的问题的所有通道进入相同的变量，因此，无论是什么，如果块的一部分被调用时，它总是会初始化你需要的变量，这样就可以以后再处理（我用的model中这个例子）。

同样重要的是要注意，在if块中，如果使用了if块的一部分（向下阅读时发现的第一个部分），那么所有其他elif语句后缀也将被忽略。 如果您想要两个不相关的if语句，您可以创建以下代码：

if statement1:
    #code here
elif statement2:
    #code not executed if statement1 is true

if statement3:
    #code executed, regardless of whether or not
    #either of the above statements are true or not

在此示例中，语句 1 和 2 是一个if块的一部分，而语句 3 是另一个块的一部分。 这也可能有助于解决代码中的一些问题。 祝你编码好运，并坚持下去！